Nut-lock.



PATENTED OCT. 9, 1906 s. N.VPOND.'

NUT LOCK.

APPLIUATION FILED JUNE15, 1906.

UNITED STAMENT SAMUEL N. POND, or MORGAN PARK, ILLINOIS.

NUT-LOCK.

832,807. Specification of Letters Patent. I Patented Oct. 9, 1906;

Application filed. June 15, 1906. Serial No. 321,814.

To all whom it may concern.-

Be it known that I, SAMUEL N. POND, a I citizen of the United States, residing at Morgan Park, in the county of Cook and State of Illinois, have invented certain new and use F designates the locking device of my in: vention, the same consisting of a cylindrical sleeve or collar of elastic material, preferably steel, which is made with a smooth interior surface and of an internal diameter slightly less than the maximum diameter ofthe threaded portion of the bolt. This sleeve is longitudinally split from end to end, as shown at G, so as to render the same capable of transverse expansion and contraction by virtue of its elasticity. Preferably, and as herein shown, the inner end of said sleeve is slightly flared or tapered, which may be effected by internally beveling the same, as indicated at f, or by expanding the end of the sleeve by swaging or otherwise before tempering, as indicated at f Fig. 6, thus facilitating the passage of the sleeve over the outer end of the bolt, as clearly shown inFig. 3.

To apply the sleeve, the tapered end thereof is brought into contact with the outer end of the bolt, as indicated in Fig. 3, and the sleeve is then driven onto the bolt by a hammer or mallet applied to its outer end until the inner end of the sleeve contacts the outer face of the nut, the latter having been previously turned up tight. Preferably, and as herein shown, the sleeve is made of a slightlygreater length than the projecting threaded portion of the bolt beyond the nut, so that the sleeve can readily be driven into endwise contact with the nut by an ordinary hammer or mallet without striking the end of the bolt.

The locking-sleeve may be made by any means or in any way within the purview of the invention, so long as its elastic character is preserved; but in Figs. 4 and 5 I have shown a plain rectangular blank F, of sheet or plate metal, having a beveled edge f. This may be rolled to cylindrical form on a suitable mandrel and then tempered to give it the desired or requisite degree of elasticity.

When the locking-sleeve has been applied in the manner described, by virtue of its transverse elasticity it embraces and hugs the threaded portion of the bolt under strong friction and squarely contacts the outer face of the nut, from which it will be apparent that the nut cannot turn backwardly without forcing the sleeve outwardly against its frictional grip upon the bolt. The contact of the end of the sleeve with the face of the nut also affords additional friction against such backand fish-plates and provided on one end with turning of the nut, and this frictional hold of the usual head D and on its threaded end the sleeve upon both the bolt and the face of equipped with the usual nut E. the nut is sufficient to prevent loosening and ful Improvements in Nut-Locks, of which the following is a specification.

This invention relates to nut-locks, and has for its object to provide a simple and inexpensive device whereby a nut may be held securely up on a bolt against back-turning under shocks, jars, and vibrations to which it may be subjected in use, at the same time permitting the nut to be removed when desired without injury to either the nut or bolt and1 without requiring the use of any special too s.

A further object of the invention is to provide a device of the character specified which shall be capable of application and use without any mutilation or change of structure of the ordinary bolt and nut.

The device of this invention is especially well adapted for use upon bolts employed for track-fastening purposes whichare peculiarly subject to loosening and back-turning of the nut through the vibrations and jars occasioned by passing trains; but it will be understood that the device is capable of general application Wherever a nut-lock of this character is desirable.

The invention will be readily understood when considered in connection with the accompanying drawings, showing a preferred embodiment thereof, in which Figure 1 is a cross-sectional view through a rail-joint, showing my invention applied to one of the fastening-bolts thereof. Fig. 2 is a perspective detail view of the locking device. Fig. 3 is a side elevational view illustrating the mode or manner of application of the locking device to'the end of the bolt. Figs. 4 and 5 are respectively plan and cross-sectional views of a blank from which the looking device may be conveniently formed; and Fig. 6 is an elevation, partly in section, of a slight modification of the locking device.

Referring to the drawings, Amay represent a standard railway-rail, and B the usual fishplates employed as elements of the rail-joint fastening.

C designates an ordinary fastening bolt assing through registering holes in the rail back-turning of the nut jars, and vibrations to subjected in use.

From the foregoing it will be seen that my invention provides a very simple nut-lock consisting of but a single part, that may be easily and cheaply made, and requires no special tools and no change or mutilation of the bolt or nut for its application. When it isdesired to remove the nut, this can be done by the application of an ordinary Wrench, the back-turning of the nut simply forcing the sleeve off the bolt ahead of it.

I claim- 1. A nut-lock for the purposes described, comprising a transversely-elastic interiorlysmooth sleeve split longitudinally from end to end and of less internal diameter than the diameter of the threaded portion of the bolt to be engaged thereby, and adapted to fric tionally embrace the latter under its oWn tension and contact at its inner end the nut, substantially as described.

under any shocks, Which the latter is 2. A nut-lock for the purposes described, comprising a transversely-elastic sleeve split longitudinally throughout its entire length and of less internal diameter than the diameter of the threaded portion of the bolt to be engaged thereby, and adapted to be driven onto the latter into end contact With the outer face of the nut, said sleeve having its inner end flared or tapered to facilitate the introduction of the end of the bolt thereinto, substantially as described.

3. The combination with the bolt 0 and nut E, of the longitudinally-split elastic sleeve F having the internally-beveled end f, whereby it is adapted to be driven onto the threaded end of the bolt C to frictionally embrace the latter under tension and contact at its inner end the outer face of the nut E, substantially as described.

SAMUEL N. POND.

Witnesses:

FREDERICK MATTIE B.

C. GooDWIN, BLIss. 

